Lock



F. v1. MATCHETTE.

LOCK. I

APPLICATION FILED SEPT|10|V1917| Patented 0c 1'1, 1921. -SHEET l.

ETS

F. I. MATCHETTE.

f LocK.

` APPLICATION FILED SEPT- IO, I9I7- 1,393,149. Patented Oct. 11, 1921.

2 SHEETS-SHEET 2.

UNITED STATFS 'FATET UFFICE;

FRANK J'. IVIATCI-ETTE, OF MILVTAUKEE, -WISHONSIN, ASSIG-NOR TO THESERVIDR COMlANY, OF WVILMINGTON, DELAWARE, A CQRPOR-ATIGN 0F DELA'WARE.

LOCK.

Lasarte.

Application filed September 10, 1917.

To all whom t may concern:

Be it known that I, FRANK J. MATci-mrrn, a citizen of the United States,residing at Milwaukee, in the county of Milwaukee and State oflWisconsin, have invented a certain new and useful improvement in Locks,of which the following is a full, clear, concise, and exact description,reference being had to the accompanying drawings, forming a part of thisspecification.

My invention relates to locks.

The particular aim of the invention is to provide a simple form of lockwhich is particularly applicable for use in connection with theinterlocking mechanism of the type disclosed in Patent Nos. 1222966 and122296e granted to me April 17th, 1917. Another aim of the invention isto provide a lock which is reversiblethat is, it can be used equallywell on the left or right :side without any change.

A further aim of the invention is to provide in combination with a lockan indicating device suitable for use in service doors of the typedisclosed in Patent No. 1222963 granted to me on April 17th, 1917.

Other subsidiary and incidental objects will be apparent from thefollowing specification.

I shall now describe a typical embodiment of my invention to apprisethose skilled in the art how to practice the invention.

In the accompanying drawings which form a part of the presentspecification- Figure 1 is a front elevation of the outside of the lockin place upon the edge of a door;

Fig. 2 is a vertical section taken on the line 2 2 of Fig. 1;

Fig. 3 is a View taken on the line 3-3 of Fig. 2;

Fig. l is a section taken on line 1f- 4L of Fig. 1 showing the shaft andconnected parts turned so that the fastening screws may be covered whenthe door is locked;

5 is a view partly in section similar to the view in Fig. 2 showing thebolt in retracted position;

Fig. 6 is a view similar to Fig. 3 showing the bolt in retractedposition; f

Fig. 7 is a perspective view of the cams for operating the Iindicatortarget; and

Fig. 8 is an inner end view of the operating shaft.

As will be understood from the prior patents above referred to, I employlocks on Specification of Letters Patent.

Patented Oct. 11, 1921.

serial No. 190,440.

each of the doors of the service cabinet and interlock these locks sothat only one door at a time can be opened. In my Serial No. 190,412,filed September 8, 1917, I have shown a service cabinet in which thedoors form the entire sides 4of the cabinet and in which the lock of thepresent invention is applied to each door. The escutcheon member l isplaced a short distance from the edge of the door 15 but in suchposition as to coperate with the interlocking mechanism contained withinthe cabinet adjacent the edge thereof.

The escutcheon 1 comprises an ornamental plate having a window 2, backof which window lies an indicator target 3 adapted to be displayedthrough the window. The window is preferably glazed by a piece of 'glasscelluloid or the like, as indicated at 4c in Fig. 2. The escutcheonmember 1 has a conical depression 5 providing a bearing for theoperating shaft 7. Upon its outer end the shaft is provided with a disk8 having a handle or thumb piece 9 of suitable shape to be grasped bythe hand of the user. rllhe escutcheon 1 is secured to the door by meansof the screws 11. The screws 11 are flat headed and lie in suitableopenings in the bottom of the conical depression 5 and are shielded bythe disk 8. The disk 8 is provided with suitable apertures 12, throughwhich a screw driver may be inserted for attaching the screws 11. Theheads of the screws are larger than the apertures 12 so that it isimpossible for the screws to come out through the openings 12. The shaft7 is held in the bearing 6 by means of a split ring 14E which engages ina circumferential grcove.

The manner of attaching the lock to thev door presents a novelarrangement and is of importance.

The disk 8 and the depression 5 in the plate 1 make it possible toprevent tampering with the lock. This is particularly necessary upon anoutside door. lf the plate 8 and attached parts 7 and 9 be set in theposition shown in Fig. 4 the holes 12 in the plate 8 will be out ofregister with the screws 11 when the door is locked as is indicated.Hence so long as the door is locked no access can be had to the screws11, and the lock cannot be taken off the door by loosening the screws.

The prongs 18 on the'shaft 7 are arranged at the four quarters and it isapparent that the finger piece 9 and disk 8 can be set either verticalor horizontal and the holes 12 either in or out of register when thedoor is locked as may be desired.

W7 hen the bolt 27 is engaged and held by the interlock member as wouldbe the oase in the kitchen door described in my Patent No. 1,222,964,when the compartment is occupied the lock cannot be released until thecompartment is opened by the housewife. At the same time theinterlocking member prevents movement of the throwing cam 17, shaft 7,thumb piece 9 and disk 8. rlhere is a little play but not enough topermit the apertures 12 to be brought in front of the screws 11.

1t is apparent that instead of apertures, parts of the disk may be cutaway.

The shaft 7 passes through an aperture in the door 15 and engages thebolt throwing cam 17 The inner end of the shaft 7 is slotted Vso as toprovide four points or 'studs 18 arranged at points separated 90o fromeachother. The bolt throwing` cam 17 is provided with correspondingslots or lsockets 19 adaptedl to receive the studs 18.

1t is apparent that the thumb piece 9 may be arranged either horizontalor vertical, de-

pending upon the manner of engagement of the studs 18 with the slots19.v

rlhe locking mechanism proper is contained in a shell or case 2O havinga ycover plate 215 the open side of the shell and the cover plate lyingagainst the inside surface of the door member 15. The cover plate has apair of lugs struck out ofthe same as shown at 22, these lugs extendingforward in an opening or recess 23 in the body of the door 15 andsupporting the indicator target 3 which is pivoted at 24 to said lugs22. The indicator target 3 is provided with a transverse rod 25 whichserves as a crank for moving the target on the pivot 24. The throwingcam 17 is pivoted upon a stud or pin 26 secured to the shell 20. rlhebolt 27 is guided in slots formed on the edge of the casing 20 and isadapted to project on one side or the other of said casing. The bolt 27is symmetrical, having similar rectangular ends 28 which are slotted asshown `at 29, these slots being engaged by suitable in# terlockingdetents or catches, such for in Vstance as the rod 30 shown in dottedlines i erating arm 33 adapted to enter the socket 3 2 for throwing theentire bolt from one side to the other. A biasing spring 34 is connectedbetween the stationary post 35 and a pin 36 fastened to the throwing cam17. The biasing spring 34 serves as a snap means for throwing the boltafter it passes center.

The throwing cam 17 comprises a circular portion 37 which engages thecorresponding circular shoulder 31 for preventing more than a certainpredetermined amount of movement of the bolt 27. This circular portion37 is provided with shoulders 38 which engage the edges of the slots 29as shown by reference numeral 39 to limit the rotative movement of theoperating arm 33. rlhe diagonal edge or surface .40 which joins the slot29 with the socket 32 forms abutting surfaces for the end of theoperating arm 33 to prevent the bolt being thrown in the oppositedirection eX cept when the throwing cam is rotated to release engagementthereof.

The casing 20 is secured to the escutcheon 1 by means of the screws 11which are threaded into the posts 41, these posts being so disposed thatthey are in alinement with the slots 29 in the bolt 27 and do notinterfere with the movement ofthe parts. At the same time their locationis such as to support the casing very firmly.

rlhe operation of the throwing cam and bolt is as follows:

Assume that the parts are in the position shown in Fig. 3, the bolt 27is locked against movement to the left by engagement of the end of thethrowing arm 33 with the shoulder or surface 40. The spring 34 is unableto move the throwing arm 33 further downbecause of engagement of theshoulder 38 with the corresponding shoulder 39 on the inner vend of theslot 29. Movement of the bolt to the left is blocked by engagement ofthe curved shoulder 31 on the edge of the slot with the circular portion37 on the throwing cam. As the throwing cam 17 is rotated in a clockwisedirection the operating arm 33 moves into the socket 34 unlocking thebolt for movement toward the right. r1`he spring 34 is compressed andwhen the throwing arm 33 passes over center this spring aids in themovement, throwing the bolt 27 over'to the right with a sharp snapmotion. rlhe movement to the left is stopped by engagement of thecorresponding shoulderV 31 with the circular portion 37 on the throwingcam 17. Rotational movement of the throwing cam is stopped by engagementof the shoulder 38 with the corresponding shoulder 39 and movement ofthe bolt to the left is blocked by the Vend of the arm 33 engaging theshoulder 40.

The outer surface of the central portion of the bolt 27 has two inclinedcam faces 43 which through the agency of the pivoted tappet arm 44 areadapted to actuate the target'. The tappet arm 44 is pivoted at 45 tothe back of the shell 20. The tappet arm is made in right and leftforms, so that the entire device may be changed over from right to leftor vice versa by providing the proper tappet arm. The lock itself neednot be changed at all but can be used either right or left as it stands.This tappet` arm has a nose 46 adapted to engage the inclined camsurface 43. The tappet arm 44 has a lug 47 bent up from the top edge ofthe same. The lug 47 has an opening 48 adapted to receive the hookedpend49 of the setting bar 50. This setting bar comprises a flat strip lyingin a notch 51 at the top of tlie'casing 20. The edge of the setting bar50 is notched as shown at 52 to limit the movement of the tappet arm 44.The upper end of the setting bar 50 is provided with a finger piece orhandle 53. A. biasing spring 54 is connected to a pin 55 mounted on thetappet arm 44 and has its outer end set in a notch in the side walls ofthe casing 20. This spring tends to move the tappet arm up or down witha snap motion after the arm is thrown over center. The lug'47 which isstruck up from the edge of the tappet arm 44 is provided with anoperating arm 56 which is struck up from the edge of the lug 47. Theoperating arm 56 has a slot 57 which embraces the rod 25 for throwingthe indicator disk or target 3.

The operation of the lock and signaling mechanism is as follows:

Assume that the device shown in Fig. 1 is mounted upon the inner door ofthe service door cabinet as shown in my serial No. 190,412, filedSeptember 8, 1917. The lock on the outer door is of the type hereindescribed but need not be provided with the signaling mechanism. Whenthe guest in the room desires some particular service from the hotelservant he calls the hotel desk on the telephone and gives his order, asfor instance, a bottle of ice water. The hotel servant having a key tofit the lock for the outer door, opens the outer door and deposits therequired article in the cabinet. He then depresses the finger piece 53which, through the medium of the setting bar, throws the tappet arm downbelow the center of the pivot 45 so that its outer end 46 may engage thetapered cam surface 43 of the bolt member 27. This depression of thesetting bar 50 moves the parts into the position shown in Figs. 1, 2 and3. The target 3 is displayed at the window 2, notifying the guest thatthe desired service has been rendered. The hotel servant then closes andlocks the outer door, releasing the inner door, so that the guest mayturn the thumb piece 9, throwing the bolt member 27 to the positionshown in Figs. 5 and 6 and at the same time restoring the target to theposition shown in Fig. 5. The target being thrown out of viewautomatically by unlocking the door gives invariably a true indication.Even if the occupant of the room should attempt to depress the settingbar he would be unable to do so until the bolt is thrown to the left.This would prevent the door from being closed again until the bolt werethrown to the right. Thus it can be seen that no false indication can begiven.

I do not intend to be limited to the precise details of constructionshown and described.

I claim:

l. Tn combination, a door member, a bolt mounted on the rear surface ofsaid door member for locking the same, a key or handle plate mounted onthe front surface of the door, saidplate having an opening, an indicatorback of said opening, manual means operable from the back surface of thedoor for setting said indicator, and automatic means controlled by thebolt member for effacing the signal of the indicator.

2. In combination, a door or the like, signaling means for indicating atone side of the door a locking bolt on the other side of the door forlocking the same, a manual key on the one side for throwing said bolt,means operable from the other side of the door for setting the signal inindicating position and means controlled by movement of the bolt forrestoring said signal to nonindicating position.

3. In combination, a movable target, a locking bolt, said locking bolthaving cam means, a tappet arm adapted to engage said cam means, meansfor limiting the motion of said tappet arm and a connection between saidtappet arm and said indicator target. Y,

4. in combination, a bolt, said bolt having a cam surface, a tappet armhaving a nose adapted to be thrown into the path of the cam means, asnap spring for said tappet arm, a setting bar for said tappet arm, asignal and a connection between the tappet arm and the signal.

5. in combination, a casing, a bolt slide ably mounted in said casing,means for throwing said bolt, a tappet arm pivoted to said casing, asnap spring for said tappet arm, a setting bar for the tappet arm, acover for the casing, said cover having lugs struck up to formsupporting brackets, a signal supported on said bracket and an armprojecting through the opening in the cover, said arm connecting thesignal and the tappet arm.

6. The combination with a lock for locking the door or closure of asignal, means actuated by said lock for operating said signal in onedirection only and manual means for operating said signal in the otherdirection.

7. The combination with a lock for locking a door or closure of asignal, manual ing said signal Without disturbing means for setting saidsignal to indicating position, and means actuated by said look forsetting` said signal to non-indicating position. j

8. The combination of a lock, a signal, said lock serving` to lock meansindependent of said signal, manual means for operatsaid lock, and meansactuated by said lock for operating said signal upon adjusting said lockto released position.

9. The combination with a lock of a signal, manual means for operatingsaid signal When the lock is in locked condition, and means actuated bysaid lock for operating said signal upon adjusting said lock to releasedposition, said last named means preventing the operation of said signaluntil the lock has Vagain been adjusted to locked condition.

10. A combined lock and signal for use in cabinet doors and'inoluding alock bolt for lockingthe door, a signal, a member operable from one sideof the door for operating said lock bolt, mechanism operated by saidlook bolt :for operating said signal in one direction only, and manualmeans operable from the other side of the door for operating said signalin the other direction.

ln Witness whereof I hereunto subscribe my name this 6th day ofSeptember, A. D; i

FRANK J. MATCHETTE.

